PAM8302LASCR

Overview

The PAM8302LASCR is a 2.5W Class-D mono audio amplifier manufactured by Diodes Incorporated, available in an MSOP-8 package with a standard quantity of 2500 units per tape and reel. It operates on a supply voltage range of 2.0V to 5.5V and delivers up to 2.5W output power at 10% THD+N into a 4Ω load with a 5V supply. The device features a filterless design that directly drives speakers, eliminating the need for external low-pass filters. It achieves peak efficiency up to 88%, includes short circuit protection, thermal shutdown, and supports a wide operating temperature range from -40°C to +85°C.

Feature Summary

• Filterless architecture allows direct speaker driving without external low-pass filters
• High efficiency up to 88% optimizes battery life for portable applications
• Integrated short circuit protection and thermal shutdown ensure operational reliability
• Low quiescent current and superior low noise characteristics enhance performance

Applications

• Portable media players (PMP/MP4)
• GPS navigation systems
• Portable speaker systems
• Walkie-talkies
• Handsfree and speaker phones
• Cellular phones

Procurement Notes

Verify the specific ordering suffix 'ASCR' corresponds to the MSOP-8 package type as documented in the manufacturer's ordering information. Confirm the standard package quantity matches the specified 2500 units per tape and reel. Ensure compatibility with the required 2.0V to 5.5V supply voltage range and check for RoHS compliance status before finalizing procurement specifications.

Selection Notes

Select this component when a compact, high-efficiency mono audio solution is required for battery-powered devices. The filterless design reduces PCB area and system cost compared to traditional Class-AB amplifiers. Consider the MSOP-8 package for space-constrained layouts and verify that the 2.5W output capability meets the specific speaker impedance requirements of the target application.

Part Context

The PAM8302L series represents a line of Class-D mono audio amplifiers designed for high-quality sound reproduction with low total harmonic distortion plus noise. This product line utilizes advanced CMOS technology to achieve superior performance while minimizing external component count. The series offers multiple packaging options, including MSOP-8 and DFN3x3-8, to accommodate various design constraints in portable electronics.

Replacement Considerations

The PAM8302LAYCR serves as a package variant within the same product line, utilizing a DFN3x3-8 footprint instead of the MSOP-8 package found in the PAM8302LASCR. Both share identical electrical characteristics and functionality, allowing for potential substitution if board layout permits the alternative package form factor.

FAQ

How does the PAM8302L manage heat dissipation?

The device incorporates thermal shutdown protection that activates when the junction temperature reaches approximately 120°C to 135°C, preventing damage during overheating conditions.

What is the purpose of the SD pin on the PAM8302L?

The SD (Shutdown) pin is an active-low terminal used to turn off the amplifier, significantly reducing supply current draw to minimize power consumption during idle modes.

Can the PAM8302L operate without external output filters?

Yes, the PAM8302L features a filterless design that allows it to directly drive speakers without requiring external low-pass filters, thereby saving PCB space and cost.